Nik Wallenda pumps his fist as he completes his 1,800 feet-long tightrope walk over the brink of the Niagara Falls in Niagara Falls, Ont., on Friday, June 15, 2012. Wallenda battled brisk winds and thick mist Friday to make history, becoming the first person to walk across Niagara Falls on a tightrope. (AP Photo/The Canadian Press, Aaron Vincent Elkaim)